Circular connector



FIG. 1 is a front perspective view of a “circular connector” showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof, the opposite side being identical thereto; and,

FIG. 6 is a top plan view thereof; the bottom view being identical thereto. 

The ornamental design for “circular connector”, as shown and described. 